# Volatility
# Copyright (C) 2008-2013 Volatility Foundation
#
# Additional Authors:
# Mike Auty <mike.auty@gmail.com>
#
# This file is part of Volatility.
#
# Volatility is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# Volatility is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Volatility.  If not, see <http://www.gnu.org/licenses/>.
#
#
# Based heavily upon the getsids plugin by Moyix
# http://kurtz.cs.wesleyan.edu/%7Ebdolangavitt/memory/getsids.py

"""
@author:       AAron Walters and Brendan Dolan-Gavitt
@license:      GNU General Public License 2.0
@contact:      awalters@4tphi.net,bdolangavitt@wesleyan.edu
@organization: Volatility Foundation
"""

import volatility.plugins.registry.registryapi as registryapi
import volatility.plugins.taskmods as taskmods
import volatility.plugins.getservicesids as getservicesids
import volatility.utils as utils
from volatility import renderers
import re, ntpath

def find_sid_re(sid_string, sid_re_list):
    for reg, name in sid_re_list:
        if reg.search(sid_string):
            return name

well_known_sid_re = [
  (re.compile(r'S-1-5-[0-9-]+-500$'), 'Administrator'),
  (re.compile(r'S-1-5-[0-9-]+-501$'), 'Guest'),
  (re.compile(r'S-1-5-[0-9-]+-502$'), 'KRBTGT'),
  (re.compile(r'S-1-5-[0-9-]+-512$'), 'Domain Admins'),
  (re.compile(r'S-1-5-[0-9-]+-513$'), 'Domain Users'),
  (re.compile(r'S-1-5-[0-9-]+-514$'), 'Domain Guests'),
  (re.compile(r'S-1-5-[0-9-]+-515$'), 'Domain Computers'),
  (re.compile(r'S-1-5-[0-9-]+-516$'), 'Domain Controllers'),
  (re.compile(r'S-1-5-[0-9-]+-517$'), 'Cert Publishers'),
  (re.compile(r'S-1-5-[0-9-]+-520$'), 'Group Policy Creator Owners'),
  (re.compile(r'S-1-5-[0-9-]+-533$'), 'RAS and IAS Servers'),
  (re.compile(r'S-1-5-5-[0-9]+-[0-9]+'), 'Logon Session'),
  (re.compile(r'S-1-5-21-[0-9-]+-518$'), 'Schema Admins'),
  (re.compile(r'S-1-5-21-[0-9-]+-519$'), 'Enterprise Admins'),
  (re.compile(r'S-1-5-21-[0-9-]+-553$'), 'RAS Servers'),
]

well_known_sids = {
  'S-1-0': 'Null Authority',
  'S-1-0-0': 'Nobody',
  'S-1-1': 'World Authority',
  'S-1-1-0': 'Everyone',
  'S-1-2': 'Local Authority',
  'S-1-2-0': 'Local (Users with the ability to log in locally)',
  'S-1-2-1': 'Console Logon (Users who are logged onto the physical console)',
  'S-1-3': 'Creator Authority',
  'S-1-3-0': 'Creator Owner',
  'S-1-3-1': 'Creator Group',
  'S-1-3-2': 'Creator Owner Server',
  'S-1-3-3': 'Creator Group Server',
  'S-1-3-4': 'Owner Rights',
  'S-1-4': 'Non-unique Authority',
  'S-1-5': 'NT Authority',
  'S-1-5-1': 'Dialup',
  'S-1-5-2': 'Network',
  'S-1-5-3': 'Batch',
  'S-1-5-4': 'Interactive',
  'S-1-5-6': 'Service',
  'S-1-5-7': 'Anonymous',
  'S-1-5-8': 'Proxy',
  'S-1-5-9': 'Enterprise Domain Controllers',
  'S-1-5-10': 'Principal Self',
  'S-1-5-11': 'Authenticated Users',
  'S-1-5-12': 'Restricted Code',
  'S-1-5-13': 'Terminal Server Users',
  'S-1-5-14': 'Remote Interactive Logon',
  'S-1-5-15': 'This Organization',
  'S-1-5-17': 'This Organization (Used by the default IIS user)',
  'S-1-5-18': 'Local System',
  'S-1-5-19': 'NT Authority',
  'S-1-5-20': 'NT Authority',
  'S-1-5-32-544': 'Administrators',
  'S-1-5-32-545': 'Users',
  'S-1-5-32-546': 'Guests',
  'S-1-5-32-547': 'Power Users',
  'S-1-5-32-548': 'Account Operators',
  'S-1-5-32-549': 'Server Operators',
  'S-1-5-32-550': 'Print Operators',
  'S-1-5-32-551': 'Backup Operators',
  'S-1-5-32-552': 'Replicators',
  'S-1-5-32-554': 'BUILTIN\Pre-Windows 2000 Compatible Access',
  'S-1-5-32-555': 'BUILTIN\Remote Desktop Users',
  'S-1-5-32-556': 'BUILTIN\Network Configuration Operators',
  'S-1-5-32-557': 'BUILTIN\Incoming Forest Trust Builders',
  'S-1-5-32-558': 'BUILTIN\Performance Monitor Users',
  'S-1-5-32-559': 'BUILTIN\Performance Log Users',
  'S-1-5-32-560': 'BUILTIN\Windows Authorization Access Group',
  'S-1-5-32-561': 'BUILTIN\Terminal Server License Servers',
  'S-1-5-32-562': 'BUILTIN\Distributed COM Users',
  'S-1-5-32-568': 'BUILTIN\IIS IUSRS',
  'S-1-5-32-569': 'Cryptographic Operators',
  'S-1-5-32-573': 'BUILTIN\Event Log Readers',
  'S-1-5-32-574': 'BUILTIN\Certificate Service DCOM Access',
  'S-1-5-33': 'Write Restricted',
  'S-1-5-64-10': 'NTLM Authentication',
  'S-1-5-64-14': 'SChannel Authentication',
  'S-1-5-64-21': 'Digest Authentication',
  'S-1-5-80': 'NT Service',
  'S-1-5-86-1544737700-199408000-2549878335-3519669259-381336952': 'WMI (Local Service)',
  'S-1-5-86-615999462-62705297-2911207457-59056572-3668589837': 'WMI (Network Service)',
  'S-1-5-1000': 'Other Organization',
  'S-1-16-0': 'Untrusted Mandatory Level',
  'S-1-16-4096': 'Low Mandatory Level',
  'S-1-16-8192': 'Medium Mandatory Level',
  'S-1-16-8448': 'Medium Plus Mandatory Level',
  'S-1-16-12288': 'High Mandatory Level',
  'S-1-16-16384': 'System Mandatory Level',
  'S-1-16-20480': 'Protected Process Mandatory Level',
  'S-1-16-28672': 'Secure Process Mandatory Level',
}

class GetSIDs(taskmods.DllList):
    """Print the SIDs owning each process"""

    # Declare meta information associated with this plugin

    meta_info = {}
    meta_info['author'] = 'Brendan Dolan-Gavitt'
    meta_info['copyright'] = 'Copyright (c) 2007,2008 Brendan Dolan-Gavitt'
    meta_info['contact'] = 'bdolangavitt@wesleyan.edu'
    meta_info['license'] = 'GNU General Public License 2.0'
    meta_info['url'] = 'http://moyix.blogspot.com/'
    meta_info['os'] = 'WIN_32_XP_SP2'
    meta_info['version'] = '1.0'

    def lookup_user_sids(self):

        regapi = registryapi.RegistryApi(self._config)
        regapi.set_current("hklm")

        key = "Microsoft\\Windows NT\\CurrentVersion\\ProfileList"
        val = "ProfileImagePath"

        sids = {}

        for subkey in regapi.reg_get_all_subkeys(None, key = key):
            sid = str(subkey.Name)
            path = regapi.reg_get_value(None, key = "", value = val, given_root = subkey)
            if path:
                path = str(path).replace("\x00", "")
                user = ntpath.basename(path)
                sids[sid] = user

        return sids

    def unified_output(self, data):

        def generator(data):
            user_sids = self.lookup_user_sids()

            for task in data:
                token = task.get_token()

                if not token:
                    yield (0, [int(task.UniqueProcessId),
                                     str(task.ImageFileName),
                                     "Token unreadable",
                                     ""])
                    continue

                for sid_string in token.get_sids():
                    if sid_string in well_known_sids:
                        sid_name = well_known_sids[sid_string]
                    elif sid_string in getservicesids.servicesids:
                        sid_name = getservicesids.servicesids[sid_string]
                    elif sid_string in user_sids:
                        sid_name = user_sids[sid_string]
                    else:
                        sid_name_re = find_sid_re(sid_string, well_known_sid_re)
                        if sid_name_re:
                            sid_name = sid_name_re
                        else:
                            sid_name = ""

                    yield (0, [int(task.UniqueProcessId),
                                     str(task.ImageFileName),
                                     str(sid_string),
                                     str(sid_name)])

        return renderers.TreeGrid(
            [("PID", int),
             ("Process", str),
             ("SID", str),
             ("Name", str),
            ], generator(data))

